Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
English
Brass Paper Fasteners: a Folded Strip under a Domed Cap
A paper fastener is a soft brass split pin with a round head: push it through punched paper and bend its two legs apart to hold the sheets, or to make a joint that turns. George W. McGill patented it in 1866. Fold thin brass strip over a rod into two legs of slightly different length, and crimp a small domed cap over the fold.
The picture: brass paper fasteners, one without its cap showing the folded strip.
Utangiye
Two hours
Amabwiriza
1
1
Cut strips and discs
Cut strips and discs
Cut thin brass sheet into strips about 3 mm wide (step 5), and scribe and cut small discs about 9 mm across for the caps.
Ibikoresho by'iyi ntambwe:
Urupapuro rw'Umuringa w'Umuhondo1 igiceIbikoresho bikenewe:
Ibyuma bikata ibyuma bisanzwe
Ikizunguruka gifite imitwe ibiri
Umurongo w'ipima2
2
Fold the legs
Fold the legs
Fold each strip over a thin rod so the two legs lie side by side, one a little shorter than the other. File the leg ends to a blunt point.
Ibikoresho bikenewe:
Uruti rw'icyuma
Ipfundo Rifite Umunwa Uringaniye
Ikusanyirizo ry'Amakariso Mato3
3
Dome the caps
Dome the caps
Punch a slot in the middle of each disc for the legs, then dome the disc by hammering it into a shallow hollow in a hardwood block with the ball peen.
Ibikoresho bikenewe:
Igikoresho gitobora uruhu
Igihimba cy'Igiti Gikomeye
Inyundo ifite umutwe wa buruta4
4
Assemble
Assemble
Thread the legs through the cap from the domed side so the fold sits inside the dome, and crimp the cap's rim round the fold with the pliers.
Ibikoresho bikenewe:
Ipfundo Rifite Umunwa Uringaniye5
5
Strip length
Strip length
Gupakira ikaye ya Jupyter…
Ibikoresho
1- Umwanya
Ibikoresho bikenewe
9- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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